Lawyer Andrei Belov buys a house and moves into it with his mother and his daughter Alla. A beautiful two-story mansion — perfect for living happily ever after. True, the realtor strongly advised Belov against buying this house, since a man had died in it and the house had gained a bad reputation. One day, the holy fool Ksenia visits the Belovs and accidentally leaves a black casket in the house. The trinket falls into Alla’s hands, and something inexplicable begins to happen to the child. Later it turns out that the casket has a devilish property: it grants any wish…